Gummed tape applier



AUZ- 8, 41950 w. c. RENNE v 2,518,184

GUMMED TAPE 'APPLIER Filed June 2, 1948 4 Sheets-Sheet 1 liar/rey.

Aug. s, 195o Filed June 2, 1948 W. C. RENNE GUMMED TAPE APPLIER 4Sheets-Sheet 2 Aug. 8, 1950 w. c. RENNE GUMMED TAPE APPLIER Filed June2. 1948 4 Sheets-Sheet 3 I fla/ff /fd Aug. 8, 1950 w. c. RENNE GUMMEDTAPE APPLIER 4 Sheets-Sheet 4 Filed June 2, 1948 Patented Aug.v 8, 1950UNITED sTATEs PATENT OFFICE 2,518,184 GUMMI-:n TAPE APPLIER William C.Renne, Kansas City, Mo.`

Application June 2, 1948, Serial No. 30,635 11 Claim. (Cl. 21e-29) lThis invention relates to new and useful improvements in a gummed tapeapplier, and has particular reference to improvementsin-the appliercovered by my application for Letters Patent,

Serial No. 784,343, led November 6, 1947.

The principal object of the present invention is the provision of asimpliiled hand operable gummed tape applier whereby tape carried o n aroll within said applier is drawn from said roll-to any desired length,moistened. and cut-oil.

Another object is the provision of a gummed tape applier of the classdescribed wherein tape led from a roll carried by the applier passesbetween a pressure roller and a moistening roller urged resilientlyagainst said pressure roller, of a hand operated lever by means of whichsaid -pressure roller may be rotated to draw a predetermined length oftape from said roll, and a pivotally mounted blade operable by saidlever at the end of its stroke to cut off said tape.

A further object is the provision, in a gummed tape applier of the classdescribed above, of means operable by the hand lever whereby avariablelength of tape may be drawn from the tape roll for each complete strokeof the lever.

A still further object is the provision, in a gummed tape applier'of theclass described, of a hand operating lever whereby tape is drawn from aroll and a blade whereby said tape is cut ofi at any desired length,said hand lever being returnable to its neutral position and said bladebeing driven on both its cutting and return strokes, by means of asingle resilient member.

Another object is the provision of a gummed tape applier wherein tape isdrawn from a. roll between a pressure roller or drum and a moisteningroller, manual means for rotating said drum to draw any desired lengthof tape from the roll, a blade operable to cut oil said tape at thedesired length, and means operable to lock said drum against rotation atthe instant the tape is cut, thereby preventing fouling of the tape endwith said blade.

Other objects are simplicity and economy of construction, ease andeiliciency of operation, adaptability to be used in any position, theprovision of novel means for insuring free flow of the moistening fluid,and the provision of novel means to prevent sticking of the moistenedtape end in the applier.

With these objects in view, as well as other objects Which will appearin the course of the specication, reference will be had to the drawing,wherein:

Figure 1 is a side elevation of a gummed tape applier embodying thepresent invention, partially broken away and shown in operativerelationship to a surface to which tape is being applied.

Fig. 2 is a plan view of the applier.

Fig. 3 is an inverted plan view oi.' the applier, with parts brokenaway.

Fig. 4 is a vertical section taken on line IV-IV of Fig. 2.

Fig. 5 is a fragmentary section taken on line V-V of Fig. 2, showing theparts in the position assumed just before the blade is moved forwardlyto cut ofi' the tape.

Fig. 6 is a view of the parts shown in Fig. 5, just after the blade hasmoved forwardly in its cutting stroke.

Fig. 7 is a View of the parts shown in Fig. 5, during the return strokeof the operating handle and just before the cutting blade is returned toits neutral position.

Vv,.lig. 8 is a sectional view taken on line -"`VIII-VIII 0f Fig. 4.

Fig. 9 is a sectional view taken on line lX-IX of Fig. 4, with the tapebroken away.

Fig. 10 is a fragmentary section taken on line X-X of Fig. 7.

Fig. 11 is a fragmentary side elevation, with parts broken away, of amodiiled form of the gummed tape applier.

Fig. 12 is an invertedl plan view of the parts shown in Fig. 11, withparts broken away.

Fig. 13 is a fragmentary section taken on line XIII-XIII of Fig. 12.

Fig. 14 is a fragmentary view of the parts shown in Fig. 11, just beforethe blade trigger releases the blade.

Fig. 15 is a view of the parts shown in Fig. 14. just after the bladehas been released to cut the tape.

Like reference numerals apply to similar parts throughout the severalviews, and the numeral 2 applies to a body member comprising a ilat,hollow, substantially triangular tank portion 4 adapted to serve as areservoir for water, the parallel side walls 6 and 1 thereof extendingforwardly therefrom in spaced apart relation. Tank 4 is provided with afilling plug 8 having a sealing washer I 0. A tape roller holder I2comprising a, sheet of metal bent to present parallel side walls i4 ismounted between the forwardly extended portions of body member walls 6and 1 by means of a bolt I6 extending therebetween. Holder I2 extendsabove side walls 6 and 1, and is adapted to carry a, roll I8 of gummedtape mounted rotatably on a bolt 20 extending between side walls I4.Said bolt is removable whereby said roll of tape may conveniently bereplaced. Holder I2 is further supported in position by means of. a bolt22 extending between body member side walls 6 and 'I adjacent theforward edges thereof.

A pressure drum or roller 24 is carried for rotation between side walls6 and 1, said drum being provided at one end with a stub axle 26extending rotatably through side wall 1 and secured by a nut 28, asshown in Fig. 8, and is provided at its opposite end with a stub axle 30extending rotatably through side wall 6 and having its outwardlyextending portion squared for rigidly mounting a toothed ratchet wheel32. Said ratchet wheel is positioned between a pair of washers 34 oflonger diameter than the ratchet in order to retain the driving rack 36in engagement with the ratchet, as hereinafter described. Drum 24extends beneath the lower edges of side walls 6 and 1 and is somewhatWider than the tape which the applier is adapted to dispense, and isprovided along one of its peripheral edges with a series of finelyspaced grooves or notches 38 disposed about the circumference thereof.

A moistening roller 40 is carried rotatably on a shaft 42 parallel tothe axis of drum 24, shaft 42 being carried in a spring bracket 44secured at its upper end to the upper surface of tank 4 by means of boltstud 46, as best shown in Fig. 4. Said bracket is adapted to urge roller40 resiliently against drum 24. As best shown in Figs. 8 and 9, roller40 comprises a series of cylinders 48 of sponge rubber or other suitablematerial carried on shaft 42 and each supported by washers 50 disposedat each end thereof. Said sponge rubber cylinders and their supportingwashers are spaced apart by spacer washers 52 carried on shaft 42.Spacer washers 52 are of smaller diameter than washers 50, and therebyprovide peripheral grooves 54 in the moistening roller.

As best shown in Fig. 4, the end portion Y56 of the tape from roll I8 ispassed downwardly between drum 24 and moistening roller 40, thence overa guide bar 58 extending rigidly between side walls 6 and 'I and spacedoutwardly from the surface of drum 24, and thence around the lowerportion of said drum, by means of which the tape may be pressed manuallyagainst any surface 60 to which it is desired to apply the tape. Thegummed side of the tape is disposed against roller 40 and is moistenedthereby. It will be noted that side walls I4 of tape holder I2 extenddownwardly to a point just above the line of contact between drum 24 androller 40, thereby providing lateral support for the tane.

At its rearward side, roller 40 passes in wiping contact with a pad 62of sponge rubber or other suitable material adjacent the upper endthereof, said padI being supported against the forward end wall 64 oftank 4. Said pad ts snugly at its lower end into a well 66 formed by theforward and upward extension 68 of the tank bottom. A hole. is formed inforward tank wall 64 adiacent the bottom of well 66, through which watermay ow from the tank into pad 62. Normally the agitation caused byaverage handling is sufficient to prevent a vacuum from formingr in thetank as water flows therefrom. which vacuum would prevent the flow ofwater to pad 62. However, should a vacuum form, it may be relieved bymeans ofa relief valve carried in tank filling plug 8, as shown in Fig.8. Said valve includes a stern 'I2 extending through a hole I4 formedcentrally in filling plug 8' and carrying a. disc I6 adapted to be urgedagainst the inner surface of plug 8 by means of a compression spring 16.Thus when a vacuum is formed, the applier is turned so that filling plug8 is on the upper side and stem 'I2 is depressed momentarily to allowair to enter the tank. The outer surface of plug 8 is recessed at 80 andthe outer end of stem 'I2 is disposed within said recess, therebypreventing accidental opening of the valve.

As best shown in Figs. 4, 8 and 9, a pair of elongated moisteningmembers 82 are each soldered at their upper ends to moistening rollerbracket 44 above moistening roller 40, extend downwardly throughperipheral grooves 54 of said roller adjacent tape 56, and are bent attheir lower ends to project into well 66 and to contact pad 62 therein.Each of said moistening members comprises a pair of wires twistedtogether with cotton or similar material disposed therebetween, in themanner of an ordinary tobacco pipe cleaner. Each moistening memberreceives moisture from pad 62 and draws said moisture therealong bycapillary action, thereby remaining moist throughout its length at alltimes. Since the gummed side of the tape touches only these moisteningmembers after leaving the moistening roller, the moistened end of thetape which remains in the applicator after each use can not stick. Ifthis tape end were free to stick to any part, the tape would be' jammedand fouled when the applicator was next used.

A transversely extending horizontal cutting blade 84 is carried justbelow well 66 and extends substantially between side walls 6 and 'I,being rigidly mounted on the horizontal connecting portion 86 of aU-shaped bracket 88, said bracket having upwardly extending side members90 disposed adjacent the outer surfaces of side walls 6 and 'I andpivotally secured thereto to 92. When bracket 88 is pivoted forwardly,blade 84 enters the space between guide bar 58 and drum 24, cutting oilthe tape substantially at point 94 indicated in Fig. 4. When bracket 88is pivoted rearwardly the rearward edge thereof rests solidly againstforward extension 68 of the tank bottom at 96. A forwardly extendingguard plate 98 is carried by body member 2 just below blade 84 toprotect said blade against accidental damage.

It 1s obvious that 1f drum 24 were snowed to rotate to draw more tapefrom roll I8 after blade 84 was pivoted forwardly to its cuttingposition, said tape would become fouled with the blade, and for thisreason means are provided for locking the'drum against rotationsubstantially at the instant the tape is cut off. This means includes alength of spring wire |00 secured rigidly at one end to the outersurface of side wall 6 by screw |02 and extending rearwardly andupwardly to a point adjacent and below the end of guide bar 58. Saidwire is rebent adjacent its free end at |04 and has its end portionturned inwardly to form a detent I 06, as shown in Fig. 3. Said detentis normally disposed in spaced relation from the notched edge of drum24, but when blade bracket 88 is pivoted forwardly, it strikes therebent portion |04 of wire |00, forcing detent |06 toward drum 24 andinto one of the notches 38 of said drum, as shown in Figs. 6 and 7, thuslocking the drum against rotation.

The drum rotating and locking means, and blade 84, are driven by thefollowing mechanism. A sheet metal handle member |08 is disposed abovetank portion 4 of body member 2, having a depending side wall ||0disposed adjacent side wall 1 of the body member, and depending sidewall IIZ disposed in parallel spaced apart relation to side wall 6 ofbody member 2, said side walls being pivotally mounted on a bolt ||4extending through side walls 8 and 1 adjacent the upper forward cornerof tank portion 4. Said handle member, in conjunction with tank v4,forms a manually operable scissors-type hand grip. Side wall ||2 of thehandle member |08 is extended forwardly. A spiral spring ||6 is disposedbetween walls 6 and I2 rearwardly from pivot ||4, said spring beingrigidly secured at its center to a squared pin I |8 fixed in wall I2,and is formed at its outer end to present a substantially radiallyextending arm |20. A link |22 is pivotally secured at one end to the endof arm |20, and at its opposite end is secured pivotally to a stud |24fixed to side member 90 of blade bracket 88.

It will be noted that when the parts are in neutral position as shown inFig. 1, stud |24 is disposed upwardly and rearwardly from pivot 82 andlink |22 is disposed upwardly from pivot 32. Hence the tension impartedto link |22 by spring ||6 tends to pivot blade bracket 88 rearwardly.Furthermore, the reactive force of spring ||6 urges handle |08 plvotallyupwardly about bolt I4. The upward movement of handle Fig. 5, link |22being lowered almost to blade bracket pivot 82. At this time anoperating finger |28 rigidly secured to the inner surface of wall ||2contacts the rearward edge of blade bracket 88, and further movement ofthe handle pivots said bracket forwardly to lower stud |24 sufficientlyto cause link |22 to pass over pivot 82. The tension of spring I8 thenpivots the blade bracket forwardly with a snap action to the positionshown in Fig. 6 to cut ofi' the tape and lock drum 24 against rotationas previously described. As handle |08 is released and is pivotedupwardly by spring ||6, blade bracket 88 remains in its forward positionuntil the handle approaches its upper limit, as shown in Fig. 7. At thistime stop pin |26 contacts the forward edge of blade bracket 88,pivotingr said bracket rearwardly sufficiently to cause link |22 to passover pivot 92. whereupon the tension exerted on said link by spring ||6causesthe blade bracket to be pivoted rearwardly to its neutralposition. The upward movement of the handle continues until stop pin |28again contacts bracket 88. It is quite possible to proportion the partsso that the blade bracket may be moved through its cutting and returnstrokes without the use of finger |28 and pin |26, but it has been foundthat these elements are useful in providing a positive action atsubstantially the same instant in each cycle of operation.

Drum 24 is driven by a compound arm designated generally by the numeral|30 and comprising a carrier plate |32 pivotally mounted aty one end onbolt ||4 and disposed adjacent the inner surface of wall I I2, and anarm |34 pivotally secured to plate 32 at |36 and having its outer endportion curved to 4present an arcuate toothed rack 36 concentric withpivot bolt ||4 and adapted to mesh with the teeth of ratchet wheel 32,as shown in Figs. 1, 5, 6, and 7. It will be noted that the generaldirection of arm |34 is disposed angularly to a line connecting pivotsI4 and I 38. forming substantially an elbow joint. and that hence rack36 may be moved radially outwardly out of engagement with ratchet wheel32 during the return stroke of the rack as hereinafter described.Referring to Fig. 6 it will be seen that a spring |38 rigidly secured atone end to the inner `surface of plate |32 at |40 and bearing at itsopposite end against the upper edge of arm |34 urges the elbow Jointformed by plate I 82 and arm 34 toward a closed position, therebyretaining rack 38 in engagement` with ratchet wheel 32. The downwardpivoting of arm |34 relative to carrier plate |82 is limited by aninwardly rebent portion |4'2 of said plate which encloses .a downwardlyextending finger |44 formed on said arm. The upward pivoting of arm |34relative to carrier plate |32 is limited by an inwardly rebent portion|46 of said plate. which passes over the upper edge portion of said armas best shown in Fig. 6.

The lower edge surface of carrier plate |32 is formed to present acurved, transversely serrated segment |48 adapted to be contacted by a,transversely serrated cam plate |50 eccentrically and rigidly mounted ona shaft |52 carried for rotation in wall ||2, said cam plate beingdisposed adjacent the inner surface of wall ||2 and just beneathserrated segment |48 of plate |32. The outwardly extending end of shaft|52 is bent to form an adjusting handle |54 by means of which cam plateVbeing disposed adjacent the inner surface of wall I2 and just beneathserrated segment |48 of plate |32. The outwardly extending end of shaft|52 is bent to forman adjusting handle |54 by means of which cam plate|50 may be adjustably turned. Said cam plate is frictionally retained inany adjusted position by means of a friction washer |56 carried on shaft|52 between wall ||2 and a shoulder |58 formed on said shaft.

As handle |08 is denressed'manually, cam plate 50 is moved upwardly tocontact segment |48, slippage between the cam and said segment beingprevented by meshing of the serrations thereof. Said cam then pivotscompound arm |30 about pivot I4, driving rack 36 to turn ratchet wheel32 and drum 24, thus drawing tape from roll I8.

Since the length of tape ejected for a single stroke of handle I 08depends on the length of the stroke of rack 36, and since the stroke ofthe rack depends on the point during the stroke of handle |08 at whichcam |50 contacts segment |48, it is apparent that the length of tapeejected by each stroke of the handle may be varied by turning cam |50 sothat it contacts segment |48 sooner or later during the stroke of thehandle. Suitable graduations |60 may be marked on the outer surface ofwall ||2 adjacent cam operating lever |54, each graduation correspondingto a given length of tape to be ejected for each stroke of handle |08.

After handle |08 has been depressed to the bottom of its stroke tooperate blade bracket 88 as previouslv described, and compound lever |30has been pivoted to its upper limit, handle |00 is released and is movedupwardly by spring I6. Lever |30 is not pivoted downwardly until aninwardly extending finger |62 fixed to the upper edge of wall |I'2contacts the upper edge of carrier plate |32, as shown in Fig. 7, saidnger then pivots plate 32 downwardly around bolt ||4. During this returnstroke, the teeth of rack 36 pass freely over the teeth of ratchet wheel32, the rearward faces of the rack and ratchet teeth being inclined forthis purpose. Rack 36 is moved radially outwardly from pivot bolt ||4 toclear the ratchet teeth by the pivoting of arm |84 relative to carrierplate |32 as previously described.

In the modified form of the applier, as shown in Figs. ll to 15, drum 24is provided with a plurality of clrcumferentlally spaced grooves |64extending longltu ally across the peripheral surface thereof. Bracket|66, carrying blade 84, is substantially similar to blade bracket 88 ofthe preferred form except that pivot 82 of said bracket is so positionedthat when the bracket pivots forwardly, blade `84 enters one of groo es|64 in substantially radial relation to drum 4, cutting off the tape 58which extends across said groove. Thus, the spacer bar 58 for holdingthe tape away from the drum surface is eliminated, and the blade itselfserves to lock the drum against further rotation. Blade bracket |86 isformed to present a finder linger |68 lying substantially in the sameplane with and adjacent one end of blade 84. Said finder projectsoutwardly beyond the forward end of blade 84, and is adapted to contactdrum 24 in spaced relation from the edge of tape 56, as shown in Fig.,12. Thus blade bracket |66 can not pivot forwardly until one of grooves|64 of drum 24 is positioned to receive the finder and blade 84. Sidewall 6 is notched at |69 to receive finder |68.

= Blade bracket |66 is normally retained in its retracted position by aplanar trigger |10 pivotally secured to side wall 6 at |12 and having apawll arm |14 adapted to engage a, notch |16 formed in blade bracket |66for preventing forward pivotal movement of said bracket. Said trigger isurged into engagement with notch |16 by a. spring wire |18 rigidlysecured at one end` to side wall 6 at |80 and bearing at its oppositeend against pawl arm |14. Trigger |10 is provided with an arm |82extending oppositely to pawl arm |14.

It will be noted that spring ||6 is so disposed that link |22 passesover pivot 92 relatively early in the operating stroke of handle |08,but blade bracket |66 is at the same time held in its retracted positionby trigger |10. Handle |08 is lowered manually until the parts have therelative positions shown in Fig. 14, operating finger contacting arm |82of trigger |10. At this point link |22 has passed over pivot 82 aconsiderable distance, thus supplying a greater initial rotationalmovement on bracket |66 than is obtainable in the preferred form, andtherebyv imparting a more positive action to said bracket when it isreleased. Further movement of handle |08 causes finger |28 to pivottrigger |10 in a clockwise direction as viewed in Fig. 15, therebymoving pawl arm |14 out of engagement with notch |16 and permittingblade bracket |66 to be pivoted forwardly. However, said bracket movesonly until finger |68 thereof contacts the surface of drum 24, and cannot move forwardly to cut the tape until the rotation of said drumbrings a groove |64 into position to receive the finder as previouslydescribed. When'handle |08 is released and is moved upwardly by springI6, link |22 passes upwardly across pivot 82, whereby the tension ofspring I6 pivots blade bracket |66 rearwardly until it is again engagedby trigger |10. 'I'he operation is otherwise similar to that of thepreferred form. Grooves |68 may be spaced more or less closely thanshown, depending on the accuracy desired in cutting the tape at givenlengths.

Thus it is apparent that a gummed tape applier having many advantageshas been produced. Closelyv regulated and widely varied lengths of tapemay be ejected by each stroke oi' the operating handle. The drum islocked as the tape is cut on to prevent feeding of the tape against theblade. and is not released till the operating handle has returnedsubstantially to its rest position. 'I'he moistened tape end whichremains in the device after each use can not stick and thus causejamming. The operating handle is returned to restposition and thecutting blade powered on both its cutting and return strokes by a singlespring ||8. By rolling drum 24 over a surface to which tape is beingapplied, any length of tape may be applied independently of the tapemeasuring mechanism. and cut oi! when ever desired. Due to the waterholding capacity of pad 82, the applier may be usedfor extended periodsof time even in an inverted position.

Although a specific embodiment of my .invention has been shown, it isapparent that many minor variations of construction and operation couldbe made without departing from the spirit of the invention.

What I claim is:

1. A gummed tape applier comprising a body member, a drum carried forrotation by said body member, a ratchet wheel carried rigidly on theaxle of said drum, a roller carried for rotation by said body member andurged resiliently against said drum, said body member being adapted tocarry a roll of gummed tape having its end portion passing between saidroller and said drum, a radially extendable arm carried pivotally foroscillatory movement by said body member and formed to present anarcuate rack concentric with said pivot and adapted to mesh with saidratchet wheel, resilient means adapted to retract said arm to urge saidrack into engagement with said ratchet wheel, and a member carriedmovably by said body member and adapted to engage and oscillate said armin one direction to rotate said drum, thereby drawing tape from saidroll, the rearward faces of the Ateeth of said rack and ratchet wheelbeing inclined whereby said rack is radially displaced to pass freelyover said ratchet wheel during the return stroke of said arm.

2. A gummed tape applier comprising a body member, a drum carried forrotation by said body member, a ratchet wheel carried rigidly on theaxle of said drum, a roller carried for rotation by said body member andurged resiliently against said drum, said body member being adapted tocarry a roll of gummed tape having its end por'- tion passing betweensaid roller and said drum, an arm carried pivotally by said body memberand formed to present an arcuate rack concentric with the pivot point ofsaid arm and adapted to mesh with said ratchet wheel, a manuallyoperable handle member carried pivotally by said body member foroscillatory movement, and a cam carried by said handle member, said cambeing positioned to contact and pivot said arm as said handle ismanipulated, thereby rotating said drum to draw tape from said roll, andsaid cam being adjustable to contact said arm at any desired point inthe stroke of said handle, thereby regulating the length of tape drawnfrom the roll by each stroke of said handle.

3. A gummed tape applier comprising a body member containing a waterreservoir, a drum carried for rotation by said body member, a moisteningroller of spongy porous material carried Arotatably by said body memberin contact with said drum, said moistening roller having peripheralgrooves formed in the surface thereof, means resiliently urging saidroller against said drum, said body member being adapted to carry a rollof tape having its end portion passing between said drum and said rollerwith the gummed side toward said roller, elongated moistening memberspassing through the peripheral grooves of said roller adjacent said tapeand extending below said roller to guide said tape, said tapecontacting-only said moistening members after it leaves said roller,absorbent, porous members for conducting water from said reservoir tosaid moistening roller and to the end portions of said elongatedmoistening members, said members being adapted to be maintained moistthroughout their lengths by water drawn therethrough by capillaryaction, and manually operable means for rotating said drum to draw tapefrom said roll'.

4. A gummed tape applier comprising a body member containing a waterreservoir, a drum carried for rotation by said body member, a moisteningroller of spongy porous material carried rotatably by said body memberin contact with said drum, said moistening roller having peripheralgrooves formed in the surface thereof, means resiliently urging saidroller against saiddrum, said body member being adapted to carry arollof tape having its end portion passing between said drum and said rollerwith the gummed side toward said roller, a spongy, porous pad carried bysaid body member in wiping contact with said moistening roller,elongated moistening members adapted to draw water therethrough bycapillary action disposed in the peripheral grooves of said rolleradjacent said tape and extending below said roller to guide said tape,said tape contacting only said moistening members after it leaves saidroller, and said moistening members having end portions disposed inintimate contact with said spongy pad, means for supplying water to saidpad from said reservoir, and manually operable means for rotating saiddrum to draw tape from said roll.

5. A gummed tape applier comprising a body member, a drum carried forrotation by said body member, a roller carried for rotation by said bodymember, means resiliently urging said roller against said drum, saidbody member being adapted to carry a roll of gummed tape having its endportion passing between said drum and said roller, a cutting bladecarried pivotally by said body member and adapted to be pivoted to andfrom a tape cutting position, a manually operable handle carried foroscillation by said body member. means operable by said handle to rotatesaid drum to draw tape from said roll, a link pivotally attached at oneend to said blade member at a point spaced apart from the pivotal axisof said blade member, and a resilient inember carried by said handle andpivotally engaging the opposite end of said link, said link normallyintersecting a line connecting the pivotal axes of said handle and saidblade whereby said handle and blade are urged to their rest positionsand whereby as said handle is oscillated said link will be moved acrossthe pivotal axis of said blade, and said blade will be thereby urged toits cutting position.

6. A gummed tape applier comprising a body member, a drum carried forrotation by said body member, a roller carried for rotation byl saidbody member, means resiliently urging said roller against said drum,said body member being i0 adapted to carry a roll of gummed tap havingits end portion passing between said drum and said roller, a cuttingblade carried rigidly by a bracket carried by said body member forpivotal movement to and from a tape cutting position, a manuallyoperable handle carried for oscillatory movement by said body member, aleaf spring fixed at one end to said handle, and a linkfpivotallyconnected at one end to the free end of said spring and pivotallyconnected at its opposite end to said blade bracket at a point spacedapart from the pivot point of said bracket, said link being disposed atone side of said pivot when said handle is in its rest position, wherebysaid spring is caused to urge said blade bracket to its retractedposition and to urge said `handle toward its rest position, said linkbeing movable by the power stroke of said handle to move across saidbracket pivot, whereby said bracket is pivoted to its cutting positionby the. tension of said spring, and said link being movable by thereturn stroke of said handle to` recross said blade bracket pivot,whereby said blade bracket is urged toward its retracted position bysaid spring.

7. A gummed tape applier comprising a body member, a drum carried forrotation by said body member and having a plurality of circumferentiallyspaced notches formed in the surface thereof, a resiliently mounteddetent carried by said body member in normally spaced apart relation tosaid drum, a roller carried for rotation by said body member and urgedresiliently against said drum, said body member being adapted to carry aroll of gummed tape having its end portion passing between said drum andsaid roller, a cutting blade carried rigidly in a bracket carried bysaid body member for pivotal movement to and from a tape cuttingposition adjacent said drum, means for rotating said drum to draw tapefrom said roll, and manually operable means for pivoting said bladebracket through its tape cutting stroke, said bracket being adaptedduring its cutting stroke to contact and move said resiliently mounteddetent into one of the notches in said drum, thereby locking said drumagainst rotation until the blade bracket is retracted.

8. A gummed tape applier comprising a body member, a drum carried forrotation by said body member, a roller carried for rotation by said bodymember, means resiliently urging said roller against said drum, .saidbody member being adapted to carry a roll of gummed tape having its endportion passing between said drum and said roller, a cutting bladecarried pivotally by said body member and adapted to be pivoted to andfrom a tape cutting position, a manually operable handle carried foroscillation by said body member, means operable lby said handle torotate said drum to draw tape from said roll, a resilient member carriedby said handle and operable thereby to urge said blade toward itscutting position, a trigger carried by said body member and adapted toretain said blade in its retracted position during a major portion ofthe operating stroke of said handle, said handle being adapted at thelatter portion of its stroke to trip said trigger to release said blade.

9. A gummed tape applier comprising a body member, a drum carried forrotation by said body member andA having a plurality ofcircumferentially spaced, substantially radially disposed grooves formedtherein, a roller carried for rotation by said body member, meansresiliently urging said roller against said drum, said body member beingadapted to carry a roll of gummed tape having its end portion passingbetween said drum and said roller, a cutting blade carried by Aa.bracket carried by said body member for pivbtal movement to and from atape cutting position within one o1' said grooves, a manually operablehandle carried for oscillation by said body member and operable torotate said drum, a single resilient member carried by saidl handle andoperable thereby to urge said blade bracket toward its cutting position,and a member ilxed relative to said blade and projecting ahead of thecutting edge of the blade to enter one of the grooves in said drum,whereby pivotal movement of said blade bracket to its cutting positionis prevented except when one of said grooves is positioned to receivesaid blade.

10. A gummed tape applier comprising a body member, a drum carried forrotation by said body member and having a plurality of circumferentiallyspaced, substantially radially disposed grooves formed therein, a rollercarried for rotation by said body member, means -resiliently urging saidroller against said drum, said body member being adapted to carry a rollof gummed tape having its end portion passing between said drum and saidroller, a cutting blade carried by Y a bracket carried by saidbodymember for pivotal movement to and from a tape cutting positionwithin one of said grooves, a manuallyvoperable handle carried foroscillation by said body member and operable to rotate said drum, asingle resilient member carried by said handle and operable thereby tomove-said blade bracket to its cutting position, a member. xed relativeto said blade and adapted to enter one oi.' the grooves in said drumahead of the blade, whereby pivotal movement of said blade bracket toits `cutting position is prevented except when one of said grooves ispositioned to receive said blade, a trigger carried by said body memberand adapted to retain said blade bracket in its retracted positionduring a major portion of the operating stroke of said handle, and meansoperable by said handle at the latter portion of its operating stroke totrip said trigger to release said blade bracket.

11. A gummed tape applier comprising a body member, a drum carried forrotation by said l2 body member and having a plurality ofcircumferentially spaced, substantially radially disposed grooves formedtherein, a roller carried for rotation by said body l member, meansresiliently urging said roller against said drum, said body member beingadapted to carry a roll of gummed tape having its end portion passingbetween said drum and said roller, a cutting blade carried by a bracketcarried by said body member for pivotal movement to and from a tapecutting position within one of said grooves, a manually operable handlecarried for oscillation by said body member and operable to rotate saiddrum, a leaf spring fixed at one end to said handle, a link pivotallyconnected at one end to the free end of said spring and pivotallyconnected at its opposite end to said blade bracket at a point spacedapart from the pivot point oi said bracket, said link being disposed atone side of said pivot when said handle is in its rest position, wherebysaid spring urges said blade bracket toward its retracted position andurges said handle toward its rest position, said link being movable bythe operating stroke `of said handle to move across said pivot, wherebysaid blade bracket is urged toward its cutting position by said spring,a trigger carried by said body member and adapted to retain said bladebracket in its retracted position during a major portion of theoperating stroke of said handle, and a member carried by said handle andoperable at the latter portion of the operating stroke thereof to tripsaid trigger to release said blade bracket.

WILLIAM C. RENNE.

REFERENCES CITED The followingreferences are of record in the ille ofthis patent:

UNITED STATES PATENTS Switzerland July 16, 1919

